Drew, you're definitely on point about Austin having an extensive selection of coffee shops! Some personal favorites that come to mind include Mozart's Coffee (which has a beautiful deck on the water) and Flightpath Coffee House in the Hyde Park Neighborhood, with its variety of food, snacks and drinks (including awesome quiche - served with salsa - and a stock of Kinder chocolate treats).

Mozart's Coffee is one of my favorite coffee shops in Austin because it's right on Lake Austin and the views are awesome. It might be a little cold since you're going in winter but it's worth it to check out. Also Halcyon is a good place. It's also a bar and they have make your own s'mores which is cool. Have fun!